LM-79 LM-80 Testing laboratory

LM-79 Testing

As the development of LED technology
continues to grow and diversify, the need for consistent and
standardized testing procedures for LED has become more prevalent than
ever. ITC is a NABL( ILAC) accredited lab for LM 79 Testing

ITC
India has made strides to stay current with the new testing standard
LM-79 set forth by the IESNA (Illuminating Engineering Society of North America). In addition, "ITCIndia" testing is now a priority when testing
our LED light systems for more reliable results. Fixtures tested by
LM-79 standards will now feature a Lighting Facts label provided through
the program created by the U.S. Department of Energy.

As the
development of LED technology continues to grow and diversify, the need
for consistent and standardized testing procedures for LED has become
more prevalent than ever. ITC INDIA is an NABL Accredited testing for
LM-79 IEC/EN 60598.

ITC India NABL Laboratory has made strides to stay current
with the new testing standard LM-79 set forth by the IEC/EN 60598. In
addition, ITC INDIA testing is now a priority when testing our LED light
systems for more reliable results. Fixtures tested by LM-79 standards
will now feature a Lighting Facts label provided through the program
created by the IEC/EN.

Applies
to LED-based products incorporating control electronics and heat sinks,
that is, those devices that require only AC mains power or a DC voltage
power supply to operate.

Absolute Photometry Basis

LM-79 requires complete luminaire testing

Traditionally, photometric evaluation of lighting products is based on separate tests for lamps and luminaires

For SSL products, LED lamps typically cannot be separated from their luminaire because of heat effects

Relative vs. Absolute Photometry

Relative
testing – Lamps of interest and luminaire are measured separately. Then
the actual light distribution and intensity of the complete luminaire
of interest is derived by normalization of the test data

Absolute
testing – The actual light distribution and intensity of the luminaire
of interest is measured directly from the complete luminaire.

LM-80 Testing

LM-80
is there to help ensure that when a person chooses to purchase an LED
that they are getting the most out of their new bulb. One interesting
thing about LEDs is that they do not “burn out” the way traditional
incandescent light bulbs do because they do not have a filament to burn
out. With LEDs the light quality just depreciates to the point where the
bulb is no longer usable. LM80 is the approved method for measuring
lumen depreciation of LEDs. Simply put, LM-80 helps to validate that the
bulb will have a usable amount of light for as long as it says it will.